Check Linux/Unix System Version

Create executable file using this below mentioned script and execute file.

#!/bin/sh

[ -r /etc/lsb-release ] && . /etc/lsb-release

if [ -z "$DISTRIB_DESCRIPTION" ] && [ -x /usr/bin/lsb_release ]; then

# Fall back to using the very slow lsb_release utility

DISTRIB_DESCRIPTION=$(lsb_release -s -d)

fi

printf "Welcome to %s (%s %s %s)\n" "$DISTRIB_DESCRIPTION" "$(uname -o)" "$(uname -r)" "$(uname -m)"

echo ""

cat /etc/redhat-release

Send email using TELNET and Sendmail protocols

Send Email Using Telnet 

Note : We use the domain mailserver.co.in as an example. Be sure to replace with your own domain.

• Open your command prompt.
• Now, connect with telnet using the following command:

telnet mailserver.co.in 25

• Type ehlo example.com. Some servers also accept helo in place of ehlo.

ehlo mailserver.co.in

• Type mail from: sender@mailserver.co.in:

mail from: sender@mailserver.co.in

• Type rcpt to: receiver@anydomain.com (replace with your actual recipient name):

rcpt to: receiver@anydomain.com

• To write the message - type data, followed by your subject and message. To end the message, put a period on a line by itself and press enter:

data

Subject: My Telnet Test Email

Hello,

This is an email sent by Minder server using the telnet command.

Your friend,

Me

.

Type quit to exit telnet.

Now you should receive Test email sender@mailserver.co.in to receiver@anydomain.com